Calendar



(No Model.)

H. S PRENTISS. CALENDAR.

No. 458,490. Patented Aug. 25,1891.

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HENRY S. PRENTISS, OF ELIZABETH, NEIV JERSEY.

CALENDAR.

SPECIFICATION forming part of Letters Patent No. 458,490, dated August25, 1891. Application filed June 1, 1891' Serial No. 394,737. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, HENRY S. PRENTISS, a citizen of the United States,and a resident of Elizabeth, in the county of Union and State of NewJersey, have invented certain new and useful Improvements in Calendars,of which the following is a specification.

My invention has reference to improvements in calendars of that classadapted to be operated directly or indirectly by a clockmovement toindicate at all times the day of the week, the day of the month, and themonth.

More particularly my invention relates to improvements in the releasingdevices shown and described in Letters Patent No. 428,318, granted to meMay 20, 1890, its object being to provide more simple means and at thesame time to insure greater reliabilityin the operation of the severaldevices for holding the calendar out of action and for releasing thesame at the proper intervals.

To this end my invention consists in certain novel features ofconstruction, as fully pointed out in the following specification andclaims, and illustrated in the accompanying drawings, in which Figure 1represents a vertical section in the plane 0c 03, Fig. 2, of a calendarembodying my new releasing device, part being broken away. Fig. 2 is afront elevation of the same.

Similar letters indicate corresponding parts.

In the drawings, the letterA designates the cylinder carrying the nameswhich indicate the days of the week; 13, the month-cylinder; and O theplates indicating the days of the BIOSEh, all supported in suitable sideframes E is the gear on the tubular shaft of the fan a, said gearforming one of the train of the spring-motor, part of which is omittedin the drawings.

The motor is normally held out of action by a stop engaging with theregulating-fan a, or with any part of the motor where the ten= sion isnot excessive. This stop I have shown in the form of a locking-lever bc, pivoted to the side frame D and a supplementary frame D the lower armof which engages the fan and the upper arm of which is normally engagedby a finger r, projecting from a horizontal shaft Z, upon which theday-cylinder A is loosely mounted. This finger 0- holds the lever b 0against the fan in opposition to a spring 7.:.

R is the clearing-lever, bent at right angles and pivoted at r to theframe, with its vertical limb adapted to engage with the arm cof thelocking-lever and to move in a plane at right angles to the motion ofthe latter, the said arm 0 being made flexible in order to permit of thelateral movement imparted thereto by the clearing-lever R. Thehorizontal limb of the lever R extends across the path of a drop F,which engages with the former once in every twenty-four hours to turn itabout the pivot 7". \Vhen the clean ing-lever R is moved by the drop, itthrows the arm a of the locking-lever out of engagement with the fingerr, and in virtue of the spring 7c the locking-lever isturned to assumethe position shown by dotted lines in Fig. 1, its motion being arrestedby a stop t'. The motor is now free to act until arrested again by thelocking-lever, which latter is accomplished by the engagement of thesaid lever by the finger 7', which again restores it to the positionshown by full lines in Fig. 1. \V hen the motor is released, the shaft Z(which bears finger r) is turned to bring the finger to the positionindicated by dotted lines in Fig. 1 by means of an arm 0, secured tosaid shaft Z and carrying a pawl a, which turns the cylinderA throughone-seventh of a revolution, the shaft being turned through the sameangle. The arm 0 is then immediately withdrawn, thus bringing the finger0' back to its original position, as shown by full lines in Fig. 1.

The mechanism for actuating the pawlbearing arm 0 is fully described inthe prior patent, before referred to, and need not be more fullydescribed here. Furthermore, it is evident that any other means could besubstituted for oscillating said finger.

That I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a motor, a locking-- lever engaging a moving partof the motor, a finger for holding the lever in its locking position,and a clearing-lever adapted to engage with the locking-lever todisengage it from the finger, said finger returning the lever to itslocking position to check the motor, substantially as described.

2. In combination with a motor, a lookingengaging with the looking-leverto free it lever engaging with a moving part of the 1110- from thefinger 0', and means for imparting a tor and havinga flexiblearn1,afinger adapted l reciprocating motion to the finger, snbstan- 1 tohold the looking-lever in its normal positialiy as described.

5 tion and to return it to said position after re- In testimony that Iclaim the foregoing as lease, and a clearing-lever engagii'ig with themy invention I have signed my name, in presflexible arm of thelooking-lever, snbstanenoe of two Witnesses, this 18th day of May,

tially as described. 1891.

The combination, with a motor, of the HENRY S. PREN"ISS. 1olooking-lever Z) c, engaging with a moving YNitnesses:

part of the motor, the finger 0, engaging one \V. H. BRISTOL, arm 0 ofthe looking-lever, a clearing-lever A. FABER DU FAUR.

